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BOSTON MARATHON 2025

Ian Williams

Bib: 2185•M

WI

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 2%
Gender (Male)
#0 / 16105
Top 4%
Division (M18-39)
#0 / 5642
Top 9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:27
Rank: #2185
Start → 5K
19:27 | 6:16/mi
10K· 6.21 mi
38:33
Rank: #1887 (+298)
5K → 10K
19:06 | 6:09/mi
15K· 9.32 mi
57:09
Rank: #1532 (+355)
10K → 15K
18:36 | 5:59/mi
20K· 12.43 mi
1:15:37
Rank: #1254 (+278)
15K → 20K
18:28 | 5:57/mi
Half· 13.11 mi
1:19:40
Rank: #1231 (+23)
20K → Half
4:03 | 5:56/mi
25K· 15.53 mi
1:34:09
Rank: #1128 (+103)
Half → 25K
14:29 | 5:58/mi
30K· 18.64 mi
1:52:50
Rank: #966 (+162)
25K → 30K
18:41 | 6:01/mi
20M
2:01:02
Rank: #895 (+71)
30K → 20M
8:12 | 6:02/mi
21M
2:07:12
Rank: #826 (+69)
20M → 21M
6:10 | 6:10/mi
35K· 21.75 mi
2:11:29
Rank: #782 (+44)
21M → 35K
4:17 | 5:44/mi
23M
2:18:56
Rank: #730 (+52)
35K → 23M
7:27 | 5:57/mi
24M
2:24:51
Rank: #704 (+26)
23M → 24M
5:55 | 5:55/mi
40K· 24.85 mi
2:30:01
Rank: #679 (+25)
24M → 40K
5:10 | 6:03/mi
25.2M
2:32:13
Rank: #664 (+15)
40K → 25.2M
2:12 | 6:23/mi
Finish· 26.22 mi
2:38:12
Rank: #658 (+6)
25.2M → Finish
5:59 | 5:52/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:19:40
Pace6:05 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:18:32
Pace5:59 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:3019:276:1619:27
6:16
-
10K
6.21 mi10:39:3638:336:1219:06
6:09
-0:07
15K
9.32 mi10:58:1257:096:0818:36
5:59
-0:10
20K
12.43 mi11:16:401:15:376:0518:28
5:57
-0:02
Half
13.11 mi11:20:431:19:406:054:03
5:56
-0:01
25K
15.53 mi11:35:121:34:096:0414:29
5:58
+0:02
30K
18.64 mi11:53:531:52:506:0318:41
6:01
+0:03
20M
20.00 mi12:02:052:01:026:038:12
6:02
+0:01
21M
21.00 mi12:08:152:07:126:036:10
6:10
+0:08
35K
21.75 mi12:12:322:11:296:034:17
5:44
-0:26
23M
23.00 mi12:19:592:18:566:027:27
5:57
+0:13
24M
24.00 mi12:25:542:24:516:025:55
5:55
-0:02
40K
24.85 mi12:31:042:30:016:025:10
6:03
+0:08
25.2M
25.20 mi12:33:162:32:136:022:12
6:23
+0:20
Finish
26.22 mi12:39:152:38:126:025:59
5:52
-0:31

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

5:44 /mi

Average Pace

6:02 /mi

Slowest Pace

6:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:36:00

99% of race

Time at Steady Pace

2:12

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:02 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:20:3019:276:1619:27
6:16
#2185
10K
6.21 mi10:39:3638:336:1219:06
6:09
#1887
15K
9.32 mi10:58:1257:096:0818:36
5:59
#1532
20K
12.43 mi11:16:401:15:376:0518:28
5:57
#1254
Half
13.11 mi11:20:431:19:406:054:03
5:56
#1231
25K
15.53 mi11:35:121:34:096:0414:29
5:58
#1128
30K
18.64 mi11:53:531:52:506:0318:41
6:01
#966
20M
20.00 mi12:02:052:01:026:038:12
6:02
#895
21M
21.00 mi12:08:152:07:126:036:10
6:10
#826
35K
21.75 mi12:12:322:11:296:034:17
5:44
#782
23M
23.00 mi12:19:592:18:566:027:27
5:57
#730
24M
24.00 mi12:25:542:24:516:025:55
5:55
#704
40K
24.85 mi12:31:042:30:016:025:10
6:03
#679
25.2M
25.20 mi12:33:162:32:136:022:12
6:23
#664
Finish
26.22 mi12:39:152:38:126:025:59
5:52
#658
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi218520862086982(Top 3%)929(Top 6%)929(Top 16%)
10K6.21 mi3.10 mi1887+2981796+2901796+2901656(Top 6%)1576(Top 10%)1576(Top 28%)
15K9.32 mi3.11 mi1532+3551456+3401456+340982(Top 3%)929(Top 6%)929(Top 16%)
20K12.43 mi3.11 mi1254+2781186+2701186+270723(Top 3%)676(Top 4%)676(Top 12%)
Half13.11 mi0.68 mi1231+231164+221164+22906(Top 3%)856(Top 5%)856(Top 15%)
25K15.53 mi2.42 mi1128+1031066+981066+98729(Top 3%)681(Top 4%)681(Top 12%)
30K18.64 mi3.11 mi966+162910+156910+156510(Top 2%)476(Top 3%)476(Top 8%)
20M20.00 mi1.36 mi895+71843+67843+67437(Top 2%)408(Top 3%)408(Top 7%)
21M21.00 mi1.00 mi826+69775+68775+68243(Top 0.9%)226(Top 1%)226(Top 4%)
35K21.75 mi0.75 mi782+44732+43732+43302(Top 1%)281(Top 2%)281(Top 5%)
23M23.00 mi1.25 mi730+52681+51681+51290(Top 1%)270(Top 2%)270(Top 5%)
24M24.00 mi1.00 mi704+26655+26655+26426(Top 1%)397(Top 2%)397(Top 7%)
40K24.85 mi0.85 mi679+25630+25630+25445(Top 2%)413(Top 3%)413(Top 7%)
25.2M25.20 mi0.35 mi664+15615+15615+15315(Top 1%)293(Top 2%)293(Top 5%)
Finish26.22 mi1.02 mi658+6609+6609+6620(Top 2%)582(Top 4%)582(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

982

Males

929

M18-39

929

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1656

Males

1576

M18-39

1576

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

982

Males

929

M18-39

929

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

723

Males

676

M18-39

676

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

906

Males

856

M18-39

856

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

729

Males

681

M18-39

681

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

510

Males

476

M18-39

476

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

437

Males

408

M18-39

408

20M→21M

20.0 - 21.0 mi

Top 0.9%
×8stories
+106ft-24ft

Overall

243

Males

226

M18-39

226

21M→35K

21.0 - 21.8 mi

Top 1%
×7stories
+17ft-86ft

Overall

302

Males

281

M18-39

281

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

290

Males

270

M18-39

270

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

426

Males

397

M18-39

397

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

445

Males

413

M18-39

413

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

315

Males

293

M18-39

293

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

620

Males

582

M18-39

582

Passing Analysis

Category:
Athletes Passed
1564
Passed By
37
Net Change
+1527
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2185
5K → 10K32123+298#2185#1887
10K → 15K3561+355#1887#1532
15K → 20K2780+278#1532#1254
20K → Half230+23#1254#1231
Half → 25K1063+103#1231#1128
25K → 30K1620+162#1128#966
30K → 20M721+71#966#895
20M → 21M701+69#895#826
21M → 35K440+44#826#782
35K → 23M542+52#782#730
23M → 24M271+26#730#704
24M → 40K283+25#704#679
40K → 25.2M150+15#679#664
25.2M → Finish82+6#664#658
TOTALS156437+1527
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing